Alright, let's work through 8191 times 8921 step by step
8191 × 8921 = 8921 × (8191)
+ 8921 × 1 resulting in 8921
+ 8921 × 90 yielding 802890
+ 8921 × 100 which equals 892100
+ 8921 × 8000 which equals 71368000

= 73071911
